Patents by Inventor Iwao Kohatsu

Iwao Kohatsu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Preparation of thin ceramic sheets
    Patent number: 4966742
    Abstract: Thin, free-standing ceramic precursor tapes are prepared from solutions comprising certain coordination complexes, thus eliminating the use of ceramic powders. The precursor tapes can be calcined to form thin ceramic sheets useful in electronic applications.
    Type: Grant
    Filed: August 20, 1985
    Date of Patent: October 30, 1990
    Inventors: Issam A. Khoury, Robert H. Heistand, II, Iwao Kohatsu
  • Dispersion process for ceramic green body
    Patent number: 4816072
    Abstract: A process is described for the preparation of a ceramic green body by hydrolyzing at least one alkoxide selected from each of two specified groups to form a dispersion of their reaction product, concentrating the dispersion to a sediment without drying it, and admixing a binder and a plasticizer with the sediment to make a ceramic slip formulation. A release agent can optionally be admixed. The slip formulation is then cast as a ceramic green body. The proportions of alkoxides can be adjusted, as desired, to produce a ceramic green body which is dielectric and useful for microcapacitors or as a conductor.
    Type: Grant
    Filed: September 1, 1987
    Date of Patent: March 28, 1989
    Assignee: The Dow Chemical Company
    Inventors: A. Dale Harley, Larwrence G. Duquette, Issam A. Khoury, Iwao Kohatsu
  • Cleavage of polyethylene glycol ethers by hydrolysis
    Patent number: 4806658
    Abstract: High molecular weight polyethylene glycol monoethers are cleaved to prepare lower oligomeric reaction products by contacting a mixture of the high molecular weight polyethylene glycol monoether and water with a hydrolytic cleavage catalyst such as alumina at elevated temperatures.
    Type: Grant
    Filed: November 15, 1982
    Date of Patent: February 21, 1989
    Assignee: The Dow Chemical Company
    Inventors: Kuo Y. Chang, Iwao Kohatsu, Philip E. Garrou
  • Thin tape for dielectric materials
    Patent number: 4752857
    Abstract: An improved, flexible, strong, thin precursor green tape for dielectric ceramics is described. The tape is prepared from a cellulosic resin of specific characteristics. The tape is especially useful in the preparation of multilayer capacitors and related electronic devices.
    Type: Grant
    Filed: August 19, 1986
    Date of Patent: June 21, 1988
    Assignee: The Dow Chemical Company
    Inventors: Issam A. Khoury, Robert H. Heistand, II, Iwao Kohatsu
  • Catalysts having alkoxide-modified supports and method of increasing the catalytic activity of a catalytic metal
    Patent number: 4748145
    Abstract: A catalyst composition comprising a catalytic metal and a support, the support being prepared by depositing a metal alkoxide on a core support, then calcining the support.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: May 31, 1988
    Assignee: The Dow Chemical Company
    Inventors: Clayton D. Wood, Philip E. Garrou, Edward F. Gleason, III, Iwao Kohatsu
  • Dispersion process for ceramic green body
    Patent number: 4710227
    Abstract: Preparation of a ceramic green body by hydrolyzing two groups of alkoxides to form a dispersion of their reaction product, concentrating the dispersion to a sediment without drying it, and admixing a binder solution, plasticizer and release agent with the sediment to make a ceramic slip formulation. The slip formulation is then cast as a ceramic green body. The proportions of alkoxides can be adjusted to produce a ceramic green body which is dielectric and useful for microcapacitors.
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: December 1, 1987
    Assignee: The Dow Chemical Company
    Inventors: A. Dale Harley, Lawrence G. Duquette, Issam A. Khoury, Iwao Kohatsu
  • Catalysts having alkoxide-modified supports and method of increasing the catalytic activity of a catalytic metal
    Patent number: 4642302
    Abstract: A catalyst composition comprising a catalytic metal and a support, the support being prepared by depositing a metal alkoxide on a core support, then calcining the support.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: February 10, 1987
    Assignee: The Dow Chemical Company
    Inventors: Clayton D. Wood, Philip E. Garrou, Iwao Kohatsu, Edward F. Gleason
  • Thin tape for dielectric materials
    Patent number: 4641221
    Abstract: An improved, flexible, strong, thin precursor green tape for dielectric ceramics, the tape being prepared from ethylcellulose of specific characteristics. The tape is especially useful in the preparation of multilayer capacitors and related electronic devices.
    Type: Grant
    Filed: August 2, 1985
    Date of Patent: February 3, 1987
    Assignee: The Dow Chemical Company
    Inventors: Issam A. Khoury, Robert H. Heistand, II, Iwao Kohatsu
  • Catalysts having alkoxide-modified supports
    Patent number: 4559364
    Abstract: A catalyst composition comprising a catalytic metal and a support, the support being prepared by depositing a metal alkoxide salt on a core support, then calcining the support.
    Type: Grant
    Filed: September 28, 1984
    Date of Patent: December 17, 1985
    Assignee: The Dow Chemical Company
    Inventors: Clayton D. Wood, Philip E. Garrou, Iwao Kohatsu, Edward F. Gleason